GILL] NOTEWORTHY EXTRA-EUROPEAN CYPRINIDS 319 
mann (1902), “it possesses some importance as a food-fish. At 
some places in the Columbia basin it is served as ‘ whitefish’ at the 
hotels, and elsewhere it is peddled over the country as ‘trout’ or 
‘fresh-water herring.’” It is also esteemed as an angle-fish. “It 
takes the hook readily and possesses considerable game qualities. 
The best bait seems to be salmon spawn, but it will bite at almost 
anything.” 
The Mylopharodon conocephalus has the upper jaw fixed (not 
protractile) and is destitute of barbels. It occurs with the socalled 
pike (Ptychocheilus oregonensis) “in the 
Sacramento and is brought with it into the 
markets.” It reaches a size scarcely less 
than that of its associate (two to three feet) 
“but is less plentiful,’ and does not extend 
beyond the Sacramento basin. 
Three other Pacific slope Cyprinids are 
noteworthy because they belong to a group 
chiefly represented in the old world (Chondro- 
stomines ) distinguished by the elongated ali- fk ee 
mentary canal (which is more than twice aS _ pe1ow of Chondrostoma 
long as the body) and, in the typical forms, asus. After Kner. 
by a horny plate investing each jaw. 
One of these (Acrocheilus alutaceus) has, like the typical Chon- 
drostomines of Eurasia, a horny plate to each jaw which is very 
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Fic. 75.—Acrocheilus alutaceus. After Jordan and Evermann. 
conspicuous and sharp-edged. ‘The structure or form of the lips 
and mouth have suggested the generic name (axpo¢ sharp, yecho¢ 
lip) as well as the vernacular names of the species (chisel-mouth, 
hard-mouth and square-mouth). It differs, however, by the reduced 
